The Mexican Peso,Asian Financial,and Argentinean Financial Crises Had Which of the Following

The Mexican peso,Asian financial,and Argentinean financial crises had which of the following in common?

A) All countries involved attempted to maintain a fixed exchange rate.
B) There was an increase in country and economic risk.
C) All countries experienced a steep decline in their foreign exchange reserves.
D) All countries had relatively open financial markets.
E) all of the above